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Shear horizontal waves in a multiferroic composite semiconductor structure.
Yang, Lei; Zappino, Enrico; Carrera, Erasmo; Du, Jianke.
Afiliação
  • Yang L; Smart Materials and Advanced Structures Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China; School of Intelligent Manufacturing, Taizhou University, Taizhou 318000, China; Mul2 Group, Department of Mechanical and Aerospace Engineering, Politecnico di
  • Zappino E; Mul2 Group, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin 10129, Italy.
  • Carrera E; Mul2 Group, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin 10129, Italy.
  • Du J; Smart Materials and Advanced Structures Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China. Electronic address: dujianke@nbu.edu.cn.
Ultrasonics ; 139: 107287, 2024 Apr.
Article em En | MEDLINE | ID: mdl-38460215
ABSTRACT
Piezoelectric semiconductors (PSs) possess the physical properties of piezoelectric and semiconductor simultaneously. When a piezomagnetic (PM) material is added to the PS, the composite structures will exhibit the comprehensive mageto-electro-semiconductive (MES) coupling effects. In this paper, the propagation characteristics of shear horizontal (SH) waves in a multiferroic composite semiconductor structure are investigated, where a n-type PS thin plate is perfectly bonded to a semi-infinite PM substrate. Based on the three-dimensional macroscopic theory for PS and PM, the dispersion equations are derived analytically. Numerical examples are presented to study the effects of steady-state carrier density, cover thickness, and material properties on the phasevelocity and attenuation of SH wave systematically. The developments of various electromechanical fields through the thickness of the layers are discussed. The results show that initial electron concentration (n0) has an important effect on the distribution of most physical quantities such as displacement, stress, electric potential and electric polarization, but magnetic potential and magnetic flux density are insensitive to n0. The piezoelectric constant e15 and piezomagnetic constant f15 have different effects on the SH wave propagation and magnetic potential distribution. The theoretical results could be helpful for the analysis and design of PS-PM structures or related surface acoustic wave (SAW) devices.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Ultrasonics Ano de publicação: 2024 Tipo de documento: Article País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Ultrasonics Ano de publicação: 2024 Tipo de documento: Article País de publicação: Holanda